runtime: Fix more typos (#13354)

* Fix more typos

* Fix typos in ignored runtime/ directory

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/errors.h b/src/errors.h
index 50cf669..7b1181a 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -3559,4 +3559,4 @@
 EXTERN char e_xattr_e2big[]
 	INIT(= N_("E1508: Size of the extended attribute value is larger than the maximum size allowed"));
 EXTERN char e_xattr_other[]
-	INIT(= N_("E1509: Error occured when reading or writing extended attribute"));
+	INIT(= N_("E1509: Error occurred when reading or writing extended attribute"));
diff --git a/src/option.c b/src/option.c
index b1e70c6..53e956c 100644
--- a/src/option.c
+++ b/src/option.c
@@ -7992,7 +7992,7 @@
 	{
 	    // Don't suggest anything if cmdline is non-empty. Vim's set-=
 	    // behavior requires consecutive strings and it's usually
-	    // unintuitive to users if ther try to subtract multiple flags at
+	    // unintuitive to users if they try to subtract multiple flags at
 	    // once.
 	    return FAIL;
 	}